Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2016
Related Party Transactions [Abstract]
Related Party Transactions	12. Related Party Transactions The spouse of the Company’s Chief Executive Officer provides consulting services to the Company. Payments made to the spouse in consulting fees were $65,000 and $110,000 in the three months ended September 30, 2016 and 2015, respectively, and $389,000 and $332,000 in the nine months ended September 30, 2016 and 2015, respectively. The costs were recorded in Research and Development expenses. As of September 30, 2016 and December 31, 2015, the Company had an outstanding liability to the related party of $11,000, and $129,000, respectively. One of the founders, a non-employee member of the Company’s Board of Directors, entered into a consulting agreement with the Company in 2014 under which the founder would receive $50,000 per year for a fixed number of hours of consulting and advisory services and receive 57,142 Common B shares (converted into 43,290 restricted stock awards and 13,852 stock options upon the LLC Conversion) with the vesting contingent on time and performance milestones being achieved. The Company paid $25,000 and $14,000 in the three months ended September 30, 2016 and 2015, respectively, and $50,000 and $39,000 in the nine months ended September 30, 2016 and 2015, respectively, to the Founder under the consulting agreement. As of September 30, 2016 and December 31, 2015, the Company had an outstanding liability to the related party of $9,000 and $0, respectively.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.